GLSA 200712-15: libexif: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	libexif: Multiple vulnerabilities
Date:	12/29/2007
Bugs:	#202350
ID:	200712-15

Synopsis

Two vulnerabilities in libexif possibly allow for the execution of arbitrary code or a Denial of Service.

Background

libexif is a library for parsing, editing and saving Exif metadata from images. Exif, the Exchangeable image file format, specifies the addition of metadata tags to JPEG, TIFF and RIFF files.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/libexif	< 0.6.16-r1	>= 0.6.16-r1	All supported architectures

Description

Meder Kydyraliev (Google Security) discovered an integer overflow vulnerability in the exif_data_load_data_thumbnail() function leading to a memory corruption (CVE-2007-6352) and an infinite recursion in the exif_loader_write() function (CVE-2007-6351).

Impact

An attacker could entice the user of an application making use of libexif to load an image file with specially crafted Exif tags, possibly resulting in the execution of arbitrary code with the privileges of the user running the application or a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All libexif users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.16-r1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200712-15.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.